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Finding the Fourth Proportional to 636,148.33, 877,887.62 and 349,686.87

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Solution

The fourth proportional to 636,148.33, 877,887.62 and 349,686.87 is: 482,569.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,148.33 : 877,887.62 = 349,686.87 : x
  2. Step 2: Convert to fraction form
    636,148.33/877,887.62 = 349,686.87/x
  3. Step 3: Cross multiply
    636,148.33x = 877,887.62 × 349,686.87
  4. Step 4: Simplify right side
    636,148.33x = 306,985,775,258.48
  5. Step 5: Solve for x
    x = 306,985,775,258.48/636,148.33
  6. Step 6: Final answer
    x = 482,569.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.